情态动词用法顺口溜

情态动词用法顺口溜（共13篇）

1.情态动词用法顺口溜 篇一

①The dictionary has disappeared. Who could have taken it?

这个字典不见了，谁可能拿走了?

②She could not have been more than six then.

那时她不可能超过六岁。

3、may / might have v-ed

may / might have v-ed 表示推测过去某事“也许”发生了.may 比 might 表示的可能性在说话人看来稍大些。例如：

①I can’t find my keys. I may / might have left them at the school yesterday.

我找不到我的钥匙了，也许我昨天把它们丢在学校了。

②She might have gone home.

她或许回家了。

4、ought to / should have v-ed 和 ought not to / shouldn’t have v-ed

ought to / should have v-ed 和 ought not to / shouldn’t have v-ed 用于对已发生的情况表示“责备”、“不满”，分别表示“本应该…”和“本不应该…”。例如：

①With all the work finished, I should have gone to the party last night.

当所有工作完成时，我昨晚本应该去参加派对的。

②He ought not to have kept us waiting so long.

他当时不应该让我们等那么久。

5、needn’t have v-ed

needn’t have v-ed 表示过去做了某事，但没有做的必要， 意为“本没必要…”。例如：

①You needn’t have waken me up I don’t have to go to work today.

你不必喊我起床了，我今天不上班。

②They need not send me a receipt.

他们不必寄给我收条。

(二)情态动词+行为动词进行式

情态动词+行为动词进行式(即情态动词+ be + v-ing形式)，表示推测或评论某动作现在是否正在进行。例如：

①He must be playing basketball.

他现在应该在打篮球。

②You should be reading a textbook.

此刻你应当在看课本。

(三)情态动词+行为动词完成进行式

情态动词+行为动词完成进行式(即情态动词+ have been + v-ing 形式)，表示推测或评论过去某动作是否正在进行或一直在进行。例如：

①They should have been meeting to discuss the problem.

他们应该一直在见面讨论这个问题。

②You must have been thinking of something.

你准是一直在想什么心事。

五、总结

本文举例说明了can和could、may和might以及must和have to等情态动词的概念、特点和用法，并且对其容易混淆的情态动词进行了比较和分析。文章还特别提到了情态动词的时态的用法。情态动词是英语语法中较为重要的语法点，是我们必须要了掌握的知识。

2.情态动词用法顺口溜 篇二

情态动词是一种本身有一定的词义, 表示说话人的情绪, 态度或语气的动词, 但不能单独作谓语, 只能和其他动词原形构成谓语。

May I have your name?

我能知道你的名字吗?

Shall we begin now?

我们现在就开始吗?

情态动词数量不多, 但用途广泛, 主要有下列:

can (could) , may (might) , must, need, ought to, dare (dared) , shall (should) , will (would) .

二、情态动词的用法特点

1) 除ought外, 其他情态动词后面只能接不带to的不定式。如果把ought to看作是固定词组的话, 那么, 所有情态动词无一例外地只能接不带to的不定式。

2) 情态助动词在限定动词词组中总是位居第一:

They need not have been punished so severely.

3) 情态助动词用于第三人称单数现在时的时候, 没有词形变化, 即其词尾无-s形式:

She dare not say what she thinks.

4) 情态动词没有非限定形式, 即没有不定式、-ing分词和-ed分词形式:

Still, she needn't have run away.

5) 情态助动词的“时”的形式并不是时间区别的主要标志。在不少场合, 情态助动词的现在时和过去时形式都可以表示现在、过去或将来时间:

Would you mind very much if I ask you to do something?

6) 情态助动词之间是相互排斥的, 即在一个限定动词词组中只能出现一个情态助动词, 但有时却可以与have和be基本助动词连用:

You should have washed the wound.

三、情态动词的用法

1.can, could能, 会

(1) 表示脑力或体力上的能力

Nobody can stop the development of science.

(2) 表示客观上的可能性

You can borrow this useful book from the library.

(3) 表示主观上的允许

Can I ask you some questions about it?

(4) (用于否定句、疑问句或感叹句中) 表示猜测、怀疑或惊诧

She couldn't/can't be so stupid to do that.

2.may, might或许, 可能, 可以

(1) 可能性

I may be busy from tomorrow on.

(2) 表示允许

I'd like to have a smoke here if I may.

(3) may或用来表示祝愿, 也常用于表示目的或让步的状语从句中

May that day come soon.

3.must应该, 必须, 一定

(1) 表示出于职责、义务该做某事

We must protect people's rights.

(2) 表示出于主观意识而必须要做某事

We must speed up the pace of our econom ic reform.

(3) 表示禁止 (用于否定句)

You must not speak ill of others.

(4) 表示猜测、推测must常用于肯定句中表示猜测。对现在或未来的事进行猜测时, 后接动词原形;对已经发生的事进行猜测时, 后接have+过去分词。例如:

You must be tired after working so long.

4.ought (后接带to的不定式构成谓语动词) 应该

(1) 表示出于职责、义务该做某事

You ought not to be so careless in your work.

(2) 表示极有可能发生某事

As an auto repairman, Dick ought to know what is wrong with the car.

5.need (用于否定句和疑问句) 需要

There are still one and a half hours to go, we needn't be insuch a hurry.

6.dare, dared (用于否定句、疑问句和疑问句) 敢Dare you stay here alone in the night?

Nobody dared mention that matter.

7.will, would表示请求。would更客气。一般用于第二人称

(1) 用于第二人称疑问句, 表示请求 (在这种用法中would使语气更为客气、委婉)

Will you tell her that I'll be back in twenty minutes?

(2) 用于表示愿望

Go where you will.

(3) 表示习惯、倾向 (可译成“总是会、老是, 等”)

Sometimes the cat will lie there all afternoon.

(4) 表示猜测 (可译成“一定是……、想必……, 等”)

This will be the house you're looking for.

(5) will用于表示决心 (可译成“一定要, 决心, 等”)

We will never talk about that subject again.

(6) would常用于虚拟条件句, 表示与事实相反或不太可能实现的情况

But for your help we would have been late.

四、常用情态动词的用法比较

1.在表示“可能性”方面

can, should, may, might这四个词都可以用来表示“可能性”。

但在表达的语气和程度方面有所不同:can和should表示以事实、理由为依据而存在的可能性;其中should的主观性较强, 往往含有“应该会怎么样”的意思。总体上说, 这两个词在这方面的语气较强、较肯定。与之相比, may和might这两个词在这方面的语气较弱些、没有那么肯定, 表示主观意断的可能性, 没有足够的客观依据。其中, might的语气更为委婉、更弱。例如:

You can't expect to be a top student without working hard at your study. (这种可能性很大。因为, 不努力学习怎么能成为尖子生呢?)

This book should be found easily in the library. (说话人认为, 图书馆应该有很多这类书籍, 所以应该很容易找到。)

2.在表示“允诺”方面

在表示“允诺”的can, may, might三个情态动词中, 以might最为客气、委婉;may为居中;而can是表达这方面意思的普通词。在这种情况下, 要根据具体情况来选用这三个情态动词。例如:

You can leave now. (用于熟识的人之间;或是公事公办的情况。)

May I trouble you with a question? (用于礼貌地提出请求。)

3.在表示“应该”方面

must, ought, should都能用来表示“出于某种职责、义务而应该怎么样”的意思。以must的语气最强烈;ought为居中;而should是表达这方面意思的普通词。例如:

We must build our motherland into a strong country with four modernization. (语气很强烈。表示我们应该把自己的祖国建设成一个具有四个现代化的强国, 而且我们非得这样做不可。)

五、情态动词的时态表达及含义

个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去, 现在或将来。

1.must用来指一般现在时和一般将来时, 过去式可用have to的过去式代替。must+have+过去分词, 表示现在对过去事物的推测

He must have told my parents about it.

他一定把这件事情告诉我父母亲了。

must和have to的区别:must表示说话人的主观思想, have to表示客观需要。ou must do it now.

你必须现在就干。 (说话人认为必须现在干)

2.needn't+have+过去分词表示过去做了没必要做的事情

You needn't have taken it seriously.

这件事情你不必太认真。

3.ought+to have done句型。指过去动作, 表示一件事情该做而未做

You ought to have been here yesterday.

你昨天就应该来。

4.用“will be”和“will (would) +have+过去分词”的结构表示推测, 主要用于第二、三人称。前者表示对目前情况的推测, 后者表示对已经完成的动作或事态的推测

如:This will be the book you want.

5.“ought to+have+过去分词”表示过去应做某事而实际未做

由上可以看出, 情态动词的用法较灵活, 含义随时态、语气变化而各异。在学习过程中, 要善于总结归纳, 体会各词的细微差别, 同时加强练习, 才能深入理解并熟练应用, 达到学以致用的目的。

参考文献

[1]章振邦.新编英语语法教程.上海:上海外语教育出版社, 2006.

[2]薄冰.英语语法.北京:开明出版社, 2002.

3.情态动词用法小结 篇三

一、情态动词基本用法的高频考点

1. can表示理论上的可能性，意为“可能会”。例如：

Even an experienced teacher can make mistakes.即使一名有经验的老师也有可能会犯错误。（理论上的可能性，事实上末发生）

2. must表示“硬要，偏要”。例如：

Must you shout so loudly？ 你非要这么大声叫嚷吗？

mustn’t表示“禁止”。例如：

You must not take the books out of the library. 不准把书带出图书馆。

Must we send in our plan this week？ 我们必须这星期交计划吗？

No， you needn’t/don’t have to. 不，没有必要。

（此处不表示“禁止”，所以不能用mustn’t回答）

3. shall用于第二、三人称，表示说话者给对方的命令、警告、允诺或威胁。例如：

All of you shall arrive before five o’clock.（命令）你们都要五点前到达。

You shall fail if you don’t work harder.（警告）如果你不更努力工作的话，你就会失败。

You shall get a gift on your birthday. （允诺）在你生日的那天 ，你会得到一个礼物。

He shall be punished. （威胁）他会受到惩罚的。

4. should表示惊讶、意外等情绪，译作“竟然”。

I can’t believe that he should speak ill of me. 我无法相信他竟然说我的坏话。

有一定根据的推测，译作“按道理应该”。例如：

They should be at home now， for they have been away for two hours. 他们都已经走了两小时了，他们现在应该到家了。（根据时间推测）

5. will表示事物的某种性质和倾向。例如：

Wood will float on the water. 木头会浮在水上。

The drawer won’t open. 抽屉打不开。

6. would表示过去的习惯性动作，译作“过去常常”（used to）。例如：

When he was young， he would listen to music alone in his room on weekends. 在年轻的时候，他经常周末独自一人待在他的房间里听音乐。

7. may常用的固定搭配：may well完全能，很可能；may as well 最好，倒不如。例如：

Her appearance has changed so much that you may well not recognize her. 她的容貌改变了如此之多，你很可能认不出她了。

You may as well do it at once. 你最好马上就做这件事。

二、“情态动词+have done”的用法

1. 表示对过去发生事情的推测

must have done，过去一定做过某事。（很有把握的肯定推测）

can’t have done，不可能做过某事。（很有把握的否定推测）

may/might have done，可能已经做过某事。（不太有把握的肯定推测）

may/might not have done，可能还没有做过某事情。（不太有把握的否定推测）

例如： It must have rained last night， for the road is quite muddy. 昨晚一定下雨了，因为路很泥泞。

Jack can’t have arrived yet， otherwise he would have telephoned us. 杰克不可能已到家了，否则他就给我们打电话了。

Tom hasn’t come back yet， He may have missed the bus again. 汤姆还没有回家，他可能又错过了公交车。

例1 （2012年高考湖北卷） As the shopkeeper Mr Johnson was selling me the bicycle， he said， “this is the best thing you ____ have done. Life has become hopelessly complicated.”

A. would B. should C. must D. could

解析 D。考查情态动词辨析。根据语境可知，该句意为：这是你所能做到的最好的事。could have done意为“能够做到……”， 与语境相符，故选D项。A项意为“愿意”，B项意为“应当”，C项意为“必须”，都与语境不符。

2. 表示“（过去）本……而实际上……”

should/ought to have done， 本应该做而实际上没有做。

needn’t have done， 本不需要做而实际上做了。

would have done， 本打算要做而实际上没有做。

could have done， 本能够做而实际上没有做。

例如：We should have studied last night， but we went to the concert instead. 昨晚我们本应该学习的，可是我们却去听了音乐会。

I was really anxious about you. You shouldn’t have left home without a word. 我真的是很担心你，你不应该不说一句话就离家出走。

There was plenty of time. She needn’t have hurried. 有足够的时间，她没有必要赶忙。

I stayed at a hotel while in New York. 我在纽约期间住的是宾馆。

Oh， why don’t you call me？ You could have stayed with me. 哦，你为什么不打我电话？你本可以和我待在一起的。

例2 He looks sleepy. He must ___________ last night， writing the essay. （stay）他看起来犯困。昨晚他肯定熬夜写论文了。

解析 have stayed up. 根据句子中文翻译中的“昨晚肯定”以及题干中的last night可知是对过去发生的事情的肯定猜测，要用must have done结构。

3. 用于if引导的非真实条件句中，表示虚拟语气

若含if的非真实条件句或省略if的含蓄性非真实条件句的从句的谓语时态为过去时，且主句也讲的是过去的事情，主句的谓语部分要用should/would/could/ might have done的结构。例如：

If I hadn’t drunk alcohol last night， I could have driven my car home.如果昨晚我没有喝酒的话，我就能开车回家了。

例3 Had we not used an out-of-date train schedule， we ___________ the train. （miss） 要不是用了一张过期的列车时刻表，我们就不会误了火车。

解析 would not have missed. 此句考查的是if的含蓄性非真实条件句的虚拟语气，从句用的是过去完成时（had used倒装）表示过去的动作，主句讲的也是过去的事情，所以要用情态动词加have done的结构，由于是否定句，故用would not+ have done表达.

例4 （2015年高考湖北卷）If she had been aware that the mushroom were poisonous， she them for dinner.（pick）要是知道这些蘑菇有毒，她不会采来做晚餐了。

4.情态动词must的用法总结 篇四

一、must表示必须的时候，多是指现在或将来的情况，用来强调说话者的主观语气。同时must也是表示有必要或有义务去做某事。对must表示必须时候的.一般疑问句，肯定回答是用must;否定的回答是用don’t have to或者needn’t。

比如：You must listen to carefully in the English class.

你必须在英语课上仔细听讲。

I must finish it in the night.

我必须在晚上完成这件事。

He must to help other finish the homework.

他必须帮助其他学生完成作业。

当must表示必须的时候，我们一定要注意区别must与have to。这两者都可以表示必须。

must是指说说话者的意识，强调的是主观性，而have to是指外界的客观情况，强调的是客观性。

比如：You know you must finish the homerwork tonight.

你知道的，你必须在今天晚上完成你的作业。(强调主观意愿)

You have to finish homework when your teacher receive it.

当你的老师收作业的时候，你不得不完成作业。(强调客观情况)

二、must表示推测的时候，多用来指有把握的、有根据的推测。Must表示推测的时候只能用于肯定句中，可以对现在、过去或者将来的情况进行推测。

比如：The book must be Tom, it has his name on it.

这本书一定是汤姆的，上面有他的名字。

The girl looks very like Alice, she must be her’s daughter.

这个女孩很像爱丽丝，她一定是爱丽丝的女儿。

The pen must be Jimmy, I see him use it in the class.

5.will是情态动词还是助动词 篇五

modal谈及将来;(表示愿意)愿，要，会，定要;烦劳别人做事时用

v.想要;希望;愿意;喜欢

v.立定志向;决心;决意;想要(某事发生);立遗嘱将(财产等)赠与(某人);立遗嘱赠与

n.意志;毅力;自制力;意愿;心愿;遗嘱

第三人称单数：wills

复数：wills

现在分词：willing

过去式：would

过去分词：willed

情态动词和助动词

用作助动词

will用作助动词，表示将来，用于构成将来时态。

用作情态动词

1.表示意愿，其意为“愿意”“想要”。

2.表示请求，意为“请……”“……好不好”。

3.表示可能性，意为“可能”“该是”“很可能”。

4.表示命令，意为“要”“得”。

5.表示习惯或倾向性，意为“总是”“惯于”。

will双语例句

We have no idea how she will do that.

我们不知道她将怎样做那件事。

Either you or your father will go with her.

或者你或者你爸爸将与她一起去。

And,if yes,when will it be and what will it look like?

6.历届高考情态动词试题 篇六

1.I was really anxious about you.You ______ home without a word.A.mustn’t leave’t have leftC.couldn’t have leftD.needn’t leave

2.----Is John coming by train?

----He should, but he ________ not.He likes driving his car.A.mustB.canC.need3.A left-luggage office is a place where bags _______ be left for a short time, especially at a railway station.A.shouldC.mustD.will

4.----Isn’t that Ann’s husband over there?

----No, it _______ be him-----I’m sure he doesn’t wear glasses.’tB.must notC.won’tD.may not

5.You ________ be tired-----you’ve only been working for an hour.A.must notB.won’t’tD.may not

6, I often see lights in that empty house.Do you think I _______ report it to the police?

B.mayC.willD.can

7.Mr.White _________ at 8:30 for the meeting, but he didn’t show up.B.should arrive

C.should have had arrivedD.should be arriving

8.----Tom graduated from college at a very young age.----Oh, he ________ have been a very smart boy then.A.couldB.shouldC.might9.----Who is the girl standing over there?

----Well, if you ________ know, her name is Mabel.A.mayB.canD.shall

10.Children under 12 years of age in that country ________ be under adult supervision when in a public library.B.mayC.canD.need

11.“The interest ________ be divided into five parts, according to the agreement made by both sides,” declared the judge.A.mayB.shouldC.must12.----I don’t mind telling you what I know.----You _______.I’m not asking you for it.A.mustn’tB.may notC.can’t’t

13.I _______ pay Tracy a visit, but I’m not sure whether I will have time this Sunday.B.mightC.wouldD.could

14.----I’ll tell Mary about her new job tomorrow.----You _________ her last week.A.ought to tellB.would have toldC.must tell15.----Excuse me.Is this the right way to the Summer Palace?

----Sorry, I am not sure.But it _______ be.B.willC.mustD.can

16.----Excuse me, but I want to use your computer to type a report.----You _________ have my computer if you don’t take care of it.’tB.might notC.needn’tD.shouldn’t

17.----Mum, I’ve been studying English since 8 o’clock._______ I go out and play with Tom for a while?

----No, I am afraid not.Besides, it’s raining outside now.’tB.Wouldn’tC.May notD.Won’t

18.Tom, you _______ leave all your clothes on the floor like this!

A.wouldn’t’tC.needn’tD.may not

19.John, look at the time.________ you play the piano at such a late hour?

B.CanC.MayD.Need

20.I ________ have been more than six years old when the accident happened.A.shouldn’t’tC.mustn’tD.needn’t

21.He ________ have completed his work;otherwise, he wouldn’t be enjoying himself by the seaside.A.shouldC.wouldn’tD.can’t

22.There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.A.mustn’tB.shan’t’tD.needn’t

23.----I’ve taken someone else’s green sweater by mistake.----It ______ Harry’s.He always wears green.B.will beC.mustn’t beD.has to be

24.He paid for a seat, when he _________ have entered free.B.wouldC.mustD.need

25.----The woman biologist stayed in Africa studying wild animals for 13 years before she returned.----Oh, dear!She ________a lot of difficulties!

A.may go throughB.might go through

C.ought to have gone through26.The World Wide Web is sometimes jokingly called the World Wide Wait because it _____ be very slow.A.shouldB.mustC.will27.----Catherine, I have cleaned the room for you.----Thanks.You ________ it.I could manage it myself.A.needn’t do’t have doneC.mustn’t doD.shouldn’t have done

28.This cake is very sweet.You ________ a lot of sugar in it.A.should putB.could have putC.might put29.----Tom is never late for work.Why is he absent today?

----Something _________ to him.A.must happenB.should have happened

C.could have happened30.----Do you know where David is ? I couldn’t find him anywhere.----Well.He _______ have gone far----his coat’s still here.A.shouldn’tB.mustn’t’tD.wouldn’t

31.----Lucy doesn’t mind lending you her dictionary.----She _________.I’ve already borrowed one.A.can’tB.mustn’t’tD.shouldn’t

32.Helen ________ go on the trip with us, but she isn’t quite sure yet.A.shallB.mustD.can

33.There’s no light on----they ________ be at home.’tB.mustn’tC.needn’tD.shouldn’t

34.We hope that as many people as possible _________ join us for the picnic tomorrow.A.needB.mustC.should35.----What’s the name?

----Khulaifi.__________ I spell that for you?

B.WouldC.CanD.Might

36.Black holes ________ not be seen directly, so determining the number of them is a tough task.B.shouldC.mustD.need

37.We _________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.A.needn’tC.shouldn’tD.mustn’t

38.----Mr.Gordon asked me to remind you of the meeting this afternoon.Don’t you forget it!----OK, I _________.’tB.don’tC.willD.do

39.The weather turned out to be fine yesterday.I ______the trouble to carry my umbrella with me.A.should have takenB.could have taken

’t have takenD.mustn’t have taken

40.----Could I have a word with you, mum?

----Oh dear, if you ________.A.canC.mayD.should

41.As you worked late yesterday, you ________ have come this morning.’tB.mayn’tC.can’tD.mustn’t

42.If it were not for the fact that she ______ sing, I would invite her to the party.A.couldn’tB.shouldn’t’tD.might not

43.The workers will go on strike if the demands they _________put forward are turned down.A.couldB.wouldD.had

44.----I think I’ll give Bob a ring.----You _______.You haven’t been in touch with him for ages.A.willB.mayC.have to45.----May I smoke here?

----If you ________, choose a seat in the smoking section.A.shouldB.couldC.may46.----Must he come to sign this paper himself?

----Yes, he ________.A.needC.mayD.will

47.Some aspects of a pilot’s job __________ be boring, and pilots often _______ work at inconvenient hours.B.may;canC.have to;mayD.ought to;must

48.----Is Jack on duty today?

----It ______ be him.It’s his turn tomorrow.A.mustn’tB.won’t’tD.needn’t

49.----How’s your tour around the North Lake? Is it beautiful?

----It ________ be, but it is now heavily polluted.A.willB.wouldD.must

50.In crowded places like airports and railway stations, you ________ take care of your luggage.A.canB.mayD.will

51.----Guess what? I have got A for my term paper.----Great!You ________ read widely and put a lot of work into it.A.mustB.shouldD.should have

52.----She looks very happy.She ________ have passed the exam.----I guess so.It’s not difficult after all.A.shouldB.couldD.might

53.----What do you think we can do for our aged parents?

----You ________ do anything except to be with them and by yourself.’t have toB.oughtn’t toC.mustn’tD.can’t

54.----Turn off the TV, Jack._________ your homework now?

----Mum, just ten more minutes, please.A.Should you be doing’t you be doing

C.Couldn’t you be doingD.Will you be doing

55.My MP4 player isn’t in my bag.Where ______ I have put it?

B.mustC.shouldD.would

56.----My can’s really fat.----You ________ have given her so much food.A.wouldn’tB.couldn’t’tD.mustn’t

57.The biggest problem for most plants, which ________ just get up and run away when threatened, is that animals like to eat them.A.shan’t’tC.needn’tD.mustn’t

58.The teacher ______ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose.A.shouldB.canC.would59.----Where is my dictionary ? I remember I put it here yesterday.----You _______ it in the wrong place.A.must putB.should have putC.might put60.----What does the sign over there read?

----“No person _______ smoke or carry a lighted cigarette, cigar or pipe in this area.”

A.willB.mayD.must

7.表示推测的情态动词用法小结 篇七

◆must用于肯定句中，表示说话人非常有把握的推测，意为“一定”“肯定”。后跟动词原形，表示对现在的推测。例如：

She must be at home.

她肯定在家。

The photo must be Mary’s. Those are her parents.

这张照片一定是玛丽的。那是她的父母亲。

◆can’t用于否定句或疑问句中，是表示推测的must的否定形式。表示对现在或将来的事实感到惊讶、怀疑或不相信的推测，意为“不会”。例如：

You can’t be right.

你不可能是正确的。

—Look! Mr Hu is on the other side of the street.

—It can’t be him. He has gone to Beijing.

——瞧！胡老师在街那边。

——肯定不是他，他去北京了。

◆may常用于肯定句中，表示对现在的事实把握性不大的推测，意为“可能” “也许”。例如：

This story may be true.

这个故事可能是真的。

The red car under the tree may be Jeff’s.

树下那辆红色的小汽车可能是Jeff的。

◆could和might表示推测时，在某些场合中可以代替can和may，但比can, may更委婉和更加不肯定。例如：

Mary passed by just now. The bag could belong to her.

玛丽刚才从这里经过，这包可能是她的。

We saw something in the sky last night. It might be the UFO.

昨天晚上我们看见天空中有一个东西，它可能是不明飞行物。

◆“情态动词 + be + 动词的现在分词”，表示对正在进行的动作的推测。例如：

They must be waiting for you at the bus station.

他们肯定在车站等你。

She can’t be watching TV now.

她现在不可能在看电视。

Can they be playing football?

8.初中英语语法之情态动词 篇八

情态动词：

①常见的情态动词有：can (could) ,may (might), must ,shall (should), will (would), dare (dared) , need等,另外,have to、had better也当作情态动词使用。情态动词后面必须加动词的原形。

②can表示体力、脑力方面的能力或客观的可能性。口语中, 在询问或说明一件事可不可以做时,常用“can”代替“may”。情态动词“can”的过去式是“could”,否定式是“cannot”通常缩写成“can’t”,“could”的`否定式是“could not”,通常缩写成“couldn’t”。如：Can I help you?(要帮忙吗？)/ He can swim.(他会游泳)/ That can’t be Mr Li.(那不可能是李先生)

③ may表示允许、请求或可能性,用may提问时,肯定回答一般用Certainly或Yes,you may.;否定回答一般用can’t或mustn’t. 如：May I ask you a question?―Certainly.(可以问你一个问题吗？当然可以)/ You may go now.(现在你可以走了)/ It may be in your pocket.(它可能在你的衣袋里)

④ must表示“必须”、“一定”的意思。表示“必须”时否定形式是mustn’t；表示“一定”时,否定形式是“can’t” 如：We must be very careful when we cross the road.(我们过马路时一定要非常小心)/ It must be Jack.(那准是杰克)/ I haven’t seen Kate today. She can’t be here.(我今天没有看到过凯特,她不可能在这里)

[注意]用must(必须)进行提问时,肯定回答用must,否定回答用needn’t；用must(一定)进行提问时,肯定回答仍用must,但是否定回答用can’t.如：Must we clean the room before we leave? CYes,you must.或No,you needn’t.(我们走之前必须要打扫房间吗？是的,必须打扫。/ 不,不需要。) / Must she be in the romm? CYes,she must.或No,she can’t.(她一定在房间里吗？是的,一定。/ 不,不可能在。)

⑤ “have to”表示“不得不”、“必须”。We’ll have to leave now for it is very late at night.

9.高中情态动词初级练习题 篇九

一 基础题

“ Must we do it now?” “ No, you ______.”

A.won’tB.needn’tC.can’tD.don’t

2.You _____ to the meeting this afternoon if you have something important to do.A.needn’t to comeB.don’t need comeC.don’t need comingD.needn’t come

3.“ May I pick a flower in the garden?” “ _________.”

A.No, you needn’tB.Not, pleaseC.No, you mustn’tD.No, you won’t

4.You’d better ______ late next time.A.don’tB.not beC.not beingD.won’t be

5.“ Can I leave this door open at night?”“ You _____.”

A.should better not B.would better not C.had better not D.had not better

6.Put on more clothes.You _____ be feeling cold with only a shirt on.A.canB.couldC.wouldD.must

7.You _________ return the book now.You can keep it till next week if you like.A.can’tB.mustn’tC.needn’tD.may not

8.A computer ______ think for itself;it must be told what to do.A.can’tB.couldn’tC.may notD.might not

9．----Could I borrow your dictionary?----Yes, of course you _______.A.mightB.willC.canD.should

10.----_______ we go skating or stay at home?----Which would you rather do yourself?

A.ShallB.MustC.WillD.Should

11.Peter _______ come with us tonight, but he isn’t very sure yet.A.mustB.mayC.canD.will

12.----Shall I tell John about it?----No, you _______.I’ve told him already.A.needn’tB.wouldn’tC.mustn’tD.shouldn’t

13.-----Don’t forget to come to my birthday party tomorrow.-----___________.A.I don’tB.I won’tC.I can’tD.I haven’t

14.It’s nearly seven o’clock.Jack _____ be here at any moment.A.mustB.needC.shouldD.can

15.My brother called to say he was all right, but _______ say where he was.A.mustn’tB.shouldn’tC.wouldn’tD.mightn’t

二 巩固题

1.Your pen is here.That ______ be yours.A.may notB.can’tC.must notD.can

2.---You _____ wear a dress（礼服）tonight.You can’t go to the concert in those dirty jeans.----Yea, mother, I _____.A.will;willB.may;canC.must;willD.have to;may

3.---Bonny hasn’t come back yet.---Well, where_____ she have gone on such a night?

A.shouldB.mayC.mustD.could

4.I wish to use your bike, ______?

A.don’t IB.may IC.doID.shouldn’t I

5.See who’s there!______ I t be Mary?

A.MayB.MustC.CanD.Will

6.----______ the film be on now?

----It ______be, but I’m not too sure.A.Can, can’tB.May, mustn’tC.Must, needn’tD.Can, may

7.John _____ be a basketball player.He’s much too short.A.mayB.mustn’tC.can’tD.should

8.You _____ call him, for(因为)he’ll surely come here soon.A.needn’tB.mustn’tC.may notD.can’t

9.I talked for a long time, and in the end I _____ make him believe me.A.was able toB.couldC.mayD.might

10.Please open the window, ______?(88，上海)

A.can’t youB.aren’t youC.do youD.will you

11.----Write to me when you get home.(01, 春招)

----____________.A.I mustB.I shouldC.I willD.I can

12.---I hear you’ve got a set of valuable Australian coins._____ I have a look?(02,上海春招)----Yes, certainly.A.DoB.MayC.Shalld.Should

13.My English –Chinese dictionary has disappeared.Who _______ have taken it?(03,上海春招)

A.shouldB.mustC.couldD.would

14．---I hear they went skiing in the mountains last winter.(02, 北京)

---It __________ true because there was little snow there.A.may not beB.won’t beC.couldn’t beD.mustn’t be

15.A left-luggage office is a place where bags ______ be left for a short time, especially at a railway station.(03)

A.shouldB.canC.mustD.will

16.----Isn’t that Ann’s husband over there?

-----No, it ____ be him.I am sure he doesn’t wear glasses.(04 , 1)

A.can’tB.mustn’tC.won’tD.may not

17.You ___________ be tired-----you’ve only been working for an hour.(04,2)

A.must notB.won’tC.can’tD.may not

18.I often see lights in that empty house.Do you think I ______ report it the police?(04,3)

A.shouldB.mayC.willD.can

19.Tom, you_____ leave all your clothes on the floor like this!(05,1,2)

A.wouldn’tB.mustn’tC.needn’tD.may not

10.情态动词用法顺口溜 篇十

一、 “情态动词 + have done”表示对过去情况的推测或估计

1. “must have done”仅用于肯定句，表示“过去一定做过某事”，是一种很有把握的推测。需要注意的是：对过去发生情况的否定推测常用“can??t/couldn??t have done”， 对过去发生情况的疑问推测常用“can/could have done”。 例如：

（05??北京春季） I have lost one of my gloves. I it somewhere.

A. must drop B. must have dropped

C. must be dropping D. must have been dropped

解析：本题的关键词是have lost， 它表明drop动作发生在过去，根据句意“我丢了一只手套，我肯定把它掉在某处了”，答案应该是对已经发生过的情况的肯定推测判断，所以本题应选B。

2. “can/could have done”用于对过去情况推测判断的否定句或疑问句中，表示不相信或怀疑的态度。例如：

Mr. Smith can??t have gone to Beijing， for I saw him in the library just now. 史密斯先生不可能去北京了，我刚才还在图书馆见过他。

注意： “could have done”还可以表示“过去本来能够做而实际上没有做的事情”。例如：

（NMET??98） —I stayed at a hotel while in New York.

—Oh， did you？ You with Barbara.

A. could have stayed B. could stay

C. would stay D. must have stayed

解析：本题的关键词是stayed和did， 根据句意“当在纽约的时候我住在旅馆”“你住在旅馆吗？你本可以和Barbara住在一起的。” You with Barbara. 需要表达的意思是：过去本来能够和Barbara住在一起，而实际上没有和Barbara住在一起，所以答案应选A. could have stayed。

3. “may/might have done”表示对过去情况的一种不太有把握的可能性推测，语气稍弱，表示“过去可能/大概已做了某事”； “may/might not have done”表示“过去可能还没有做某事”。 “may/might have done”表示推测，不能用于疑问句中。另外， might比may语气弱。例如：

He didn??t come to school today. He might have been ill. 他今天没来上课，他可能病了。

注意：含有“must/may/might/can + have done”表示对过去情况推测判断的句子，如果变成反意疑问句，反意疑问句中的助动词应根据句意和句子的时间状语决定，常用do/does/did/has/have等。例如：

He must have been living here since 1996， hasn??t he？ 他一定是在这儿住了好几年了，是吗？ （since 1996暗示反意疑问句中的助动词用hasn??t）

You can??t have slept well last night， did you？ 你昨天晚上没睡好，是不是？ （last night暗示反意疑问句中的助动词用did）

4. “should/ought to have done”表示过去应该做而（实际）没有做的事情，含有责备或遗憾的语气，意为“本应该……”；其否定形式为“should not/ought not to have done”，表示某种行为不该发生但却发生了，意为“本不应该……”。例如：

Look， Tom is crying. I shouldn??t have been so harsh on him. 看，汤姆哭了，我本来不应该对他如此严厉。（本句语意为：我过去本来不应该对他如此严厉，但事实上过去对他很严厉。）

5. “needn??t have done”表示过去没有必要做某事，但实际上做了某事。通常不用于肯定句。例如：

As you worked late yesterday， you needn??t have come this morning. 你昨天晚上工作到很晚，没有必要来（实际却来了）。

而句子He didn??t need to come yesterday. 意为“他昨天没有必要来（实际也没来。）”。此句中need是实义动词。

注意：表示推测过去某动作发生的可能性时，就表示的可能性程度而言， must最大， could其次， may更次之， might最小。

二、 “情态动词 + have done”在虚拟语气中的用法

在虚拟条件句中，如果表示与过去事实相反的情况，从句用过去完成时，而主句中则用“情态动词 + have done”， 即“would/could/should/might + have done”。 例如：

If I had seen the film， I would have told you about it. 如果我看过这场电影，我就会把电影内容告诉你了。

If I had got there earlier， I would have met Mr. Li. 如果我早点到那儿，我就会遇到李先生了。

11.情态动词语法讲解及练习题 篇十一

You may drive the tractor. 你可以开那台拖拉机。

2)当回答由may 引起的问题时，否定答语要用must not,表示“不许可”、“不应该”、“不行”。

May I come in?

Yes, you may.

No,you can’t

No, you may not .

No ,you mustn’t

No ,you’d better not.

3) may /might 推测性用法 可能

He may be right.

He may not come today (可能不)

He may /might come tomorrow.

, 注意: 1只用于肯定和否定句中,不用于疑问句中。

2 might 比may可能性更小

He might get a job.

He may get a job.

3 may no 可能不 can not不可能

He may not come

He can’t come

3)表建议(可和as well 连用)

You may(might)as well stay where you are.

你还是原地待着好。(may as well 有“还是……的好”的含义)

4)表祝愿

12.情态动词用法顺口溜 篇十二

初中英语教案之中考英语情态动词考点

初中英语教案之中考英语情态动词考点 本文自 路客英语资源网 www.luke555.com   根据对初中英语情态动词部分在全国各地中考英语试题的分析可知，今后该部分将是重点考查点之一。其考查重点为： 1、英语情态动词在一般疑问句中的问与答 2、情态动词表示猜测的用法 3、will与shall的用法 4、dare与need的用法   一、考查情态动词的基本用法 一些初中英语情态动词的常用的意义往往为中考英语考查的焦点，考生须准确理解其含义并根据句子意思选择正确的情态动词。 1．must和have to 两者都表示“必须”的意思，但must含有说话人主观上的`看法、态度；have to则表示客观上的需要。 【考例】--Must we finish giving out the posters today? --Yes, we _______. It cant be put off any longer. [太原市] A. can  B. may  C. must [答案]C。[解析] 此题考查英语情态动词的用法。回答由must引起的一般疑问句，其肯定答语要用must，不能用can或may。故选C。 When traffic lights are red. We _________stop and wait. [南京市] A. may B. can   C. must   D. might. [答案]C。[解析] 考英语查情态动词，must必须，表示禁止。 一I really like playing computer games! 一Im afraid you ________stop，for your study and your health. [07宜昌市] A. am  B. will    C．may    D．must [答案]D。[解析] 答语意思为“为了你的学习和健康，恐怕你必须停止玩电脑游戏”，所以must最恰当。 2．can和could 两者都可用来表能力，意为“能够，会”；可用来表示许可(常用在口语中)或表示怀疑、惊异、不相信等态度(常用于否定句、疑问句或感叹句中)。 【考例】--Could I borrow your dictionary? --Of course you ____________.[陕西省] A. can    B. must    C. should D. will [答案]A。[解析] 上文的could并不表示过去，而只是一种委婉的说法，所以答语用can更礼貌些。 3．shall和should   shall用于第一、三人称疑问句表示征求对方意：见；用于第二、三人称肯定句或否定句表示说话人给予对方的“禁止、命令、警告、允诺或威胁等”。   should用来表示建议、责任、义务时，可译为“应该，应当”，此时可用ought to替换； 可用来表示惊讶、忧虑、赞叹等不满情绪(用在疑问句中)；还可用来委婉地陈述自己的意见。 【考例】Schools _________allow students at least one hour a day for sports. [安徽省] A. would B. might  C. should D. could [答案]C。[解析] 此处用英语情态动词should的用法。should表示“应当…‘应该”的含义比其他三个词更强些。

13.情态动词的词语分析 篇十三

dare(普通动词)，dare(情态动词)

Dare的意思是敢于、冒险，它既可用作普通动词，又可作情态动词用(modal verb/auxiliary verb)。

作普通动词用时，有各种时态形式的.变化，第三人称单数现在时要加s，可以和带to或不带to的不定式连用。例如：

He dares to go to Africa alone.

他敢独自去非洲。

Does he dare to tell her?

他敢告诉她吗?

He doesnt dare(to)tell her.

他不敢告诉她。

He dared to go there.

他敢去那儿。

He didnt dare(to) take the risk.

他不敢冒这个险。

作为普通动词，dare也能表示挑战的意思。例如：

He dared me to my face.

他当面向我挑战。

作情态动词用时，一般只用于疑问句和否定句中，第三人称单数现在时不加s，无各种时态形式变化。例：

Dare he tell you the truth?

他敢不敢对你说出事实来?

He dare not tell me that sort of thing.